Space photos of the day: Space Robots

Astronauts Carl J. Meade and Mark C. Lee test the new Simplified Aid for EVA Rescue (SAFER) system some 130 nautical miles above Earth. The pair was actually performing an in-space rehearsal of a contingency rescue using never-before flown hardware. Meade, who here wears the small back-pack unit with its complementary chest-mounted control unit, and Lee anchored to the Space Shuttle Discovery's Remote Manipulator System (RMS) robot arm, took turns using the SAFER hardware during their shared space walk.